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Incorporation of SCBA in Red Ceramics and Sintering in Microwave Oven

Non-Metallic Material Science 2021年第2期3卷 6-16页

作者： Gabriela Pitolli Lyra Valdemir Santos Eliria Maria de Jesus Agnolon Pallone ruth herta goldschmidt aliaga kiminami Bruno Carlos De Santis João Adriano Rossignolo Postgraduate Programme in Materials Science and Engineering University of São PauloUSP/FZEAPirassunungaBrazil Department of Materials Engineering Federal University of Sao CarlosSao CarlosBrazil

The present study investigated the incorporation of sugarcane bagasse ash(SCBA)in red ceramics,sintered in conventional oven and microwave oven,aiming to provide an alternative product,and a sintering process with higher energy efficiency in the production of red *** raw materials were characterized by XRF,XRD,thermogravimetry,particle size distribution and specific mass *** specimens were shaped by extrusion in two different compositions,red clay and red clay with addition of 20%SCBA and sintered at temperatures from 700 to 1100℃.The conventional sintering occurred for 60 min with heating rate of 10℃/*** the microwave oven the sintering occurred in a hybrid way,with heating rate of 50℃/min for 5,10 and 15 *** sintering the tests of linear shrinkage,compressive strength,water absorption,apparent porosity and apparent specific mass were *** addition of SCBA causes an increase in the values of water absorption and decreases the compressive strength and specific mass of the red *** occurs due to the creation of pores inside the material from the volatilization of organic matter present in the *** sintering in microwave oven,when compared to conventional sintering,promotes an increase in the values of compressive strength and specific mass and reduction of water absorption values of ceramics,probably due to the refinement of the microstructure and the higher *** the incorporation of ashes can be partially compensated by a more efficient *** use of SCBA and the sintering in microwave oven,showed to be viable alternatives in the development of a more sustainable and light material,promoting the management of waste,reduction in the consumption of raw materials and energy saving.

关键词： Red clay Agroindustrial waste Non-conventional sintering Energy efficiency

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